1996 TOYOTA LAND CRUISER stop start

P20769
(43 − 56 mph)
Vehicle Speed
70 − 90 km/h
Idling
IG SW OFF (1)(2) (3)
(4) (6)
(5)
Warm up 3 − 5 min. 2 min.
3 − 5 min.2 min.(7)
Time
DI−70
−
DIAGNOSTICS ENGINE
1996 LAND CRUISER (RM451U)
SYSTEM CHECK DRIVING PATTERN
(1) Connect the OBD II scan tool or TOYOTA hand −held tester to the DLC3.
(2) Start and warm up the engine with all accessories switched OFF.
(3) Run the vehicle at 70 − 90 km/h (43 − 56 mph) for 3 min. or more.
(4) Idle the engine for about 2 min.
(5) Stop at safe place and turn the ignition switch OFF.
(6) Start the engine and do steps (3) and (4) again.
(7) Check the ”READINESS TESTS” mode on the OBD II scan tool or\
TOYOTA hand−held tester.
If ”COMPL” is displayed and the MIL does not light up, the system \
is normal.
If ”INCMPL” is displayed and the MIL does not light up, run the ve\
hicle again and check it.
HINT:
”INCMPL” is displayed when either condition (a) or (b) exists.\
(a) The system check is incomplete.
(b) There is a malfunction in the system.
If there is a malfunction in the system, the MIL will light up after ste\
ps (2) to (6) above are done.
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P22475
BatteryFusible
Link
FL AM2
F7W−R
EA2
W−R
B−R B−R
EA2
B−R
B−W B−W
W−B
Distributor
Ignition
Coil 4
12
EA2
IH1
W−B
8 1
2
Noise
Filter 45
B 3
Igniter Tr2
2
1
IH2 IH2
B−G
B−G
B−Y B−YE4
E4 IGT
IGF Tr15V
ECM
1 3 11
6
IG Switch
1
EC
17 23
14 13
−
DIAGNOSTICS ENGINE
DI−97
1996 LAND CRUISER (RM451U)
DTC P1300 Igniter Circuit Malfunction
CIRCUIT DESCRIPTION
The ECM determines the ignition timing, turns on Tr1 at a predetermined angle ( °CA) before the desired
ignition timing and outputs and ignition signal (IGT) ”1” to the\
igniter.
Since the width of the IGT signal is constant, the dwell angle control circuit in \
the igniter determines the time
the control circuit starts primary current flow to the ignition coil based \
on the engine rpm and ignition timing
one revolution ago, that is, the time the Tr2 turns on.
When it reaches the ignition timing, the ECM turns Tr1 off and outputs the IGT signal ”O”.
This turns Tr2 off, interrupting the primary current flow and generating a high voltage i\
n the secondary coil
which causes the spark plug to spark. Also, by the counter electromotive forc\
e generated when the primary
current is interrupted, the igniter sends an ignition confirmation signal (IGF)\
to the ECM. The ECM stops fuel
injection as a fail safe function when the IGF signal is not input to the ECM.
DTC No.DTC Detecting ConditionTrouble Area
P1300No IGF signal to ECM for 6 consecutive IGT signals during
engine running Open or short in IGF or IGT circuit from igniter to ECM
 Igniter
 ECM
WIRING DIAGRAM
DI5PQ−02
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Q07308
AT3417
OK if hot
Add if hot
AT4252
0 − 1 mm
Q07309
DI−138
−
DIAGNOSTICS AUTOMATIC TRANSMISSION
1996 LAND CRUISER (RM451U)
(3) With the engine OFF, add new fluid through the oil
filler pipe.
Fluid type: ATF DEXRON ®II
Capacity:
Dry fill: 11.0 liters (11.6 US qts, 9.7 Imp. qts)
Drain and refill: 1.9 liters (2.0 US qts, 1.7 Imp. qts)
(4) Start the engine and shift the shift lever into all posi-
tions from P to L position and then shift into P posi-
tion.
(5) With the engine idling, check the fluid level. Add fluid up to the COOL level on the dipstick.
(6) Check the fluid level at the normal operating tem- perature 70 − 80° C (158 − 176°F) and add as nec-
essary.
NOTICE:
Do not overfill.
(d) Check the fluid leaks.
Check for leaks in the transmission.
If there are leaks, it is necessary to repair or replace O −rings,
Seal packings, oil seals, plugs or other parts.
(e) Inspect and adjust the throttle cable. (1) Check that the throttle valve is fully closed.
(2) Check that the inner cable is not slack.
(3) Measure the distance between the outer cable endand stopper on the cable.
Standard distance: 0 − 1 mm (0 − 0.04 in.)
If the distance is not standard, adjust the cable by the adjusting
nuts.
(f) Inspect and adjust the shift lever position. When shifting the shift lever from the N position to other
positions, check that the lever can be shifted smoothly
and accurately to each position and that the position indi-
cator correctly indicates the position.
If the indicator is not aligned with the correct position, carry out
the following adjustment procedures. (1) Loosen the nut on the control rod.
(2) Push the control rod fully rearward.
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Q07310Control Shaft Lever(b)
(c)
Q07311
Neutral Basic Line
Bolt
Groove
−
DIAGNOSTICS AUTOMATIC TRANSMISSION
DI−139
1996 LAND CRUISER (RM451U)
(3) Return the control shaft lever 2 notches to N posi-
tion.
(4) Set the shift lever to N position.
(5) While holding the shift lever lightly toward the R
position side, adjust the control rod nut.
(6) Tighten the control rod nut.
Torque: 13 N·m (130 kgf·cm, 9 ft·lbf)
(7) Start the engine and make sure that the vehicle moves forward when shifting the lever from the N to
D position and reverses when shifting it to the R
position.
(g) Inspec and adjust park/neutral positoin switch. Check that the engine can be started with the shift lever
only in the N or P position, but not in other positions.
If not as stated above, carry out the following adjustment proce-
dure.
(1) Loosen the park/neutral position switch bolt and set
the shift lever to the N position.
(2) Align the groove and neutral basic line.
(3) Hold in position and tighten the bolt.
Torque: 13 N·m (130 kgf·cm, 9 ft·lbf) For continuity inspect of the park/neutral position
switch, see page DI−169 .
(h) Check the idle speed. Idle speed:
650 ± 50 rpm (In N position and air conditioner OFF)
7. MECHANICAL SYSTEM TESTS
(a) Measure the stall speed. The object of this test is to check the overall performance of the transmis\
sion and engine by measuring
the stall speeds in the D and R positions.
NOTICE:
Do the that at normal operating ATF temperature 50 − 80°C (122 − 176° F).
Do not continuously run this test longer than 5 seconds.
To ensure safety, conduct this test in a wide, clear, level area which provides good traction.
The stall test should always be carried out in pairs. One technician should\
observe the condi-
tions of wheels or wheel stoppers outside the vehicle while the other is doin\
g the test.
(1) Chock the 4 wheels.
(2) Connect an OBD II scan tool or TOYOTA hand−held tester to the DLC3.
(3) Fully apply the parking brake.
(4) Keep your left foot pressed firmly on the brake pedal.
(5) Start the engine.
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DI−140
−
DIAGNOSTICS AUTOMATIC TRANSMISSION
1996 LAND CRUISER (RM451U)
(6) Shift into the D position. Press all the way down on the accelerator pedal wi\
th your right foot.
Quickly read the stall speed at this time.
Stall speed: 1,950 ± 150 rpm
(7) Do the same test in R position.
Stall speed: 1,950 ± 150 rpm
Evaluation:
ProblemPossible cause
Stall speed low in D and R positions
 Engine output may be insuf ficient
 Stator one− way clutch is operating properly
HINT:
If more than 600 rpm below the specified value, the torque con-
verter clutch could be faulty.
Stall speed high in D position
 Line pressure too low
 Forward clutch slipping
 No. 2 one− way clutch not operating properly
 O/D one− way clutch not operating properly
Stall speed high in R position
Line pressure too low
 Direct clutch slipping
 1st and reverse brake slipping
 O/D clutch slipping
Stall speed high in D and R positions
Line pressure too low
 Improper fluid level
 O/D one− way clutch not operating properly
(b) Measure the time lag.
When the shift lever is shifted while the engine is idling, there will be a certain time lapse o\
r lag before
the shock can be felt. This is used for checking the condition of the O/D d\
irect clutch, forward clutch,
direct clutch and 1st and reverse brake.
NOTICE:
Do the test at normal operating ATF temperature 50 − 80°C (122 − 176° F).
Be sure to allow 1 minute interval between tests.
Take 3 measurements and take the average value.
(1) Fully apply the parking brake.
(2) Start the engine and check idle speed.
Idle speed: 650 ± 50 rpm (In N position and air conditioner OFF)
(3) Shift the shift lever from N to D position. Using a stop watch, measure the ti\
me it takes from shift-
ing the lever until the shock is felt.
In the same manner, measure the time lag for N → R.
Time lag: N → D Less than 1.2 seconds
In the same way, measure the time lag for N → R.
Time lag: N → R Less than 1.5 seconds
If N → D time or N → R time lag is longer than specified:
Evaluation:
ProblemPossible cause
N → D time lag is longer
Line pressure too low
 Forward clutch worn
 O/D one− way clutch not operating properly
N → R time lag is longer
Line pressure too low
 Direct clutch worn
 1st and reverse brake worn
 O/D one− way clutch not operating properly
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−
DIAGNOSTICS AUTOMATIC TRANSMISSION
DI−141
1996 LAND CRUISER (RM451U)
8. HYDRAULIC TEST
Measure the line pressure.
NOTICE:
Do the test at normal operation ATF temperature 50 − 80°C (122 − 176° F).
The line pressure test should always be carried out in pairs. One techni\
cian should observe
the conditions of wheels or wheel stoppers outside the vehicle while the ot\
her is doing the test.
Be careful to prevent SST’s hose from interfering with the exhaust pipe.
(1) Warm up the ATF.
(2) Remove the test plug on the transmission case right side and connect SST\
(See page AT−18
for the location to connect SST).
SST 09992 −00094 (09992 −00150, 09992−00270)
(3) Fully apply the parking brake and chock the 4 wheels.
(4) Start the engine and check idling speed.
(5) Keep your left foot pressed firmly on the brake pedal and shift into D p\
osition.
(6) Measure the line pressure when the engine is idling.
(7) Press the accelerator pedal all the way down. Quickly read the highest line pr\
essure when engine
speed reaches stall speed.
NOTICE:
Release the accelerator pedal and stop test if the rear wheels begin to rotate before the engine speed
reaches the specified stall speed.
(8) In the same manner, do the test in R position.
Specified line pressure:
Condition D position kPa (kgf/cm2, psi) R position kPa (kgf/cm2, psi)
Idling422 −
481 (4.3 − 4.9, 61 − 70)510 − 608 (5.2 − 6.2, 74 − 88)
Stall1,285 − 1,530 (13.1 − 15.6, 128 − 153)1,579 − 1,932 (16.1 − 19.7, 158 − 193)
If the measured pressures are not up to specified values, recheck the thro\
ttle cable adjustment and retest.
Evaluation:
ProblemPossible cause
If the measured value at all positions are higher
Throttle cable out of adjustment
 Throttle valve defective
 Regulator valve defective
If the measured value at all positions are lower
Throttle cable out of adjustment
 Throttle valve defective
 Regulator valve defective
 Oil pump defective
 O/D direct clutch defective
If pressure is low in the D position onlyD position circuit fluid leakage
 Forward clutch defective
If pressure is low in the R position only
R position circuit fluid leakage
 Direct clutch defective
 1st and reverse brake defective
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−
DIAGNOSTICS AUTOMATIC TRANSMISSION
DI−149
1996 LAND CRUISER (RM451U)
Harsh engagement (N
→ D)
1. Shift solenoid valve SL circuit
2. ATF temp. sensor circuit
3. Throttle position sensor circuit
4. Park/neutral position switch circuit
5. On −vehicle repair matrix chart
6. Off −vehicle repair matrix chart
7. ECMDI−163
DI−154 DI−35
DI−169 −
−
DI−145
Harsh engagement (Lock −up)
1. Shift solenoid valve SL circuit
2. Throttle position sensor circuit
3. No. 1 vehicle speed sensor circuit
4. No. 2 vehicle speed sensor circuit
5. On −vehicle repair matrix chart
6. Off −vehicle repair matrix chart
7. ECMDI−163 DI−35
DI−87
DI−166 −
−
DI−145
Harsh engagement (Any driving position)
1. Shift solenoid valve SL circuit
2. ATF temp. sensor circuit
3. Throttle position sensor circuit
4. No. 1 vehicle speed sensor circuit
5. No. 2 vehicle speed sensor circuit
6. On −vehicle repair matrix chart
7. Off −vehicle repair matrix chart
8. ECMDI−163
DI−154 DI−35
DI−87
DI−166
−
−
DI−145
Slip or shudder (Forward and reverse)1. On −vehicle repair matrix chart
2. Off −vehicle repair matrix chart−
−
Slip or shudder (A particular position)1. On −vehicle repair matrix chart
2. Off −vehicle repair matrix chart−
−
No engine braking1. On −vehicle repair matrix chart
2. Off −vehicle repair matrix chart−
−
Poor acceleration
1. Throttle position sensor circuit
2. No. 1 vehicle speed sensor circuit
3. No. 2 vehicle speed sensor circuit
4. Shift solenoid valve No. 1 and No. 2 circuit
5. Shift solenoid valve SL circuit
6. On −vehicle repair matrix chart
7. Off −vehicle repair matrix chartDI−35
DI−87
DI−166
DI−157
DI−163 −
−
No kick− down
1. Throttle position sensor circuit
2. Shift solenoid valve No. 1 and No. 2 circuit
3. No. 1 vehicle speed sensor circuit
4. On−vehicle repair matrix chart
5. ECMDI−35
DI−157 DI−87 −
DI−145
No pattern select1. Pattern select switch circuit
2. ECMDI−179
DI−145
No 2nd start
1. Pattern select switch circuit
2. Shift solenoid valve No. 1 and No. 2 circuit
3. ECMDI−179
DI−157
DI−145
Large shift shock or engine stalls when starting off or stopping
1. Shift solenoid valve SL circuit
2. Stop light switch circuit
3. Off −vehicle repair matrix chart
4. ECMDI−163
DI−185 −
DI−145
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DI−152
−
DIAGNOSTICS AUTOMATIC TRANSMISSION
1996 LAND CRUISER (RM451U)
Slip or shudder (R position)
1. Direct clutch (C2)
2. 1st and reverse brake (B
3)
3. O/D one− way clutch (F
0)



Slip or shudder (1st)
1. Forward clutch (C1)
2. No. 2 one− way clutch (F
2)
3. O/D one− way clutch (F
0)



Slip or shudder (2nd)
1. 2nd brake (B2)
2. 2nd coast brake (B
1)
3. No. 1 one− way clutch (F
1)



Slip or shudder (3rd)1. Direct clutch (C2)
Slip or shudder (O/D)1. O/D brake (B0)
No engine braking (1st − 3rd)1. O/D direct clutch (C0)
No engine braking (1st)1. 1st and reverse brake (B3)
No engine braking (2nd)1. 2nd coast brake (B1)
Poor acceleration (All positions)1. Torque converter clutchAT −26
Poor acceleration (O/D)1. O/D brake (B0)
2. O/D planetary gear unit

Poor acceleration (Other than O/D)1. O/D brake (B0)
Poor acceleration (Other than 2nd)1. 2nd coast brake (B1)
2. No. 1 one− way clutch (F
1)


Poor acceleration (1st and 2nd)1. O/D one−way clutch (F0)
Poor acceleration (L and R positions)1. 1st and reverse brake (B3)
Poor acceleration (R position)1. Forward clutch (C1)
Engine stalls when starting off or stopping1. Torque converter clutchAT−26
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